Marine Weather and Tide Forecast for Los Altos Hills, CA

SHORT TERM
Issued at 1201 AM PDT Sat May 30 2026 (Today and tonight)

Quiet weather with weak progressive ridging aloft overnight, becoming primarily zonal through the day today will help lift temperatures close to normal for this time of year. The marine layer has returned and is well established for the remainder of the overnight through mid-morning. Coastal areas should see the marine layer lift by late morning with mostly sunny skies area wide for the remainder of the afternoon and early evening. The marine layer will once again fill back in later tonight.

LONG TERM
Issued at 1201 AM PDT Sat May 30 2026 (Sunday through Friday)

The progressive and relatively weak longwave synoptic pattern across our latitude will keep the weather quiet, temperatures similar on a day-to-day basis Sunday through Thursday with slightly above normal temperatures and breezy diurnal wind fluctuations with onshore flow. Confidence continues to increase for a more organized and deeper synoptic troughing pattern for the end of next week and beyond. Although it appears any rain would be well to our north attm, the pattern would keep temperatures below seasonal averages.

AVIATION
(12Z TAFS)
Issued at 423 AM PDT Sat May 30 2026

MVFR-IFR stratus prevails across the region and will dissipate through the post-sunrise hours. Breezy northwest winds will develop across the region this afternoon and evening with gusts reaching around 15 knots. Winds will diminish in the late evening hours. High resolution models are showing less stratus coverage overnight into Sunday morning when compared to the current setup. This makes sense given a developing ridge and consequent marine layer compression, but the exact extent is hard to pin down this early.

Vicinity of SFO... MVFR ceilings through the morning with strong gusts developing in the afternoon and evening hours, as gusts to 25 knots are expected. Not expecting gusts above 35 knots at this time.
Confidence in stratus coverage overnight through Sunday morning is low. If it occurs, IFR-LIFR ceilings are possible in a compressed marine layer.

SFO Bridge Approach... Similar to SFO.

Monterey Bay Terminals... Generally MVFR-IFR ceilings across the region, dissipating through the late morning and early afternoon hours. Breezy northwest winds develop in the afternoon and evening. Some stratus may return to the mountains south of MRY this evening, with moderate confidence of expansion to the rest of the region and especially SNS through the end of the TAF period.

MARINE
(Today through Thursday)
Issued at 423 AM PDT Sat May 30 2026

High pressure to the north results in moderate to fresh northerly breezes through the weekend. The strongest winds will be over the northern outer waters. Occasional gale force gusts will occur in the far outer waters, and the coastal jets to the south of Point Arena and along the Big Sur Coast. Increasing winds and building rough seas will lead to hazardous conditions over the coastal waters through the weekend.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this evening for Mry Bay.

Small Craft Advisory until 3 AM PDT Monday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Arena to Pt Reyes 10-60 NM-Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory from 3 PM this afternoon to 3 AM PDT Sunday for Pigeon Pt to Pt Pinos 0-10 nm-Pt Reyes to Pigeon Pt 0- 10 nm.